Process of varnishing balloons.



H. E. HONEYWELL.

PROCESS OF VARNISHING BALLOONS.

APPLICATION mm r:n.2|. ma.

1,281,374. Patented 0 15, 191s.v

UNITED STATES PATENT OFFICE.

HARRY E. HONEYWELL, OF ST. LOUIS, MISSOURI.

PROCESS OF VABNISHING BALLOONS.

Specification of Letters Patent.

Patented Oct. 15, 1918.

Application filed February 21, 1918. Serial No. 218,533.

Toall whom it may concern:

Be it known that I, ARRY- ll. Hornywnnn, a citizen of the United States, residin at the city of St. Louis and State of Missouri, have invented a new and useful llrocess of Varnishing Balloon's, of which the following is a speci i varnishing balloons. 10.

fication.

This invention relates to the process of An ObJGQt of the invention is to provide a novel method or mode of procedure for treating or varnishing the cloth or fabric used in the manufacture of balloons;

, Another object of the invention 1s to providea novel composition for use n treating br varnishing thecloth or fabric.

f with a varnish, l submerging the By my new process the cloth is first sized cloth within a quantity of varnish in a proper receptacle until the cloth {has become saturated and impregnated with i j the varnish.

After having been submerged for a sulficient time to become thoroughly saturated andimpregnatedwith the varnish the sizing is completed by passing thecloth between rollers, similar to the rollers of a wringer,-

to press out and removeifrom the cloth all excess quantity of varnish and leavin the "cloth properly sized with the varnis in which it had been submerged.

After the cloth has been passed between the rollers it is fpstooned upon a rack ineluding a number of rigid parallel rods,

lines, poles or other suitable supports to hold the cloth in such position that the threads are straight and to prevent sagg ng of the material or stretching of QDYPOICIOD.

:"loori be constructed on the of the material beyond other portions thereof. The cloth is maintained on the rack until it' has become-sufliciently dried. and

then may be cut and sewed together to form the s uces; It is preferable that the "bal- French block system so. that the scams or lines of stitching are not continuous from the top to thebottom of the balloon. The method of,the manufacture of the balloon onthe French block system is is preferable in other respects over the construction .in which the scams or lines of stitchin are continuous from top to bottom. The rawin tion of the baloon illustrating the arrange ment of the substances or material applied tothe balloon cloth.

much more convenient and The solution in which the cloth is immersed as described, consists of a mixture of linseed oil, litharge and yellow ocher, in

approximately the proportions of one-half pound of l1t arge and one-half pound of yellow ocher to each gallon of oil. The mixture of these ingredients is boiled until reduced to a proper consistency so that when the sizing being elfected by 1s a sectional view of a por-- V gas-tight. prefer is a novel the'cloth is immersed therein the cloth will. become thoroughly saturated and impregnated.

The sizing applied to the cloth in. the manner described closes the openings and 1nterstices in the cloth so that when the edges of the seetions of cloth are sewed together the sizing is in and between the contacting portions of cloth which are sowed together as shown at 1 in the drawing;

After the cloth has been treated'and dried,

out and sewed to form the balloon, it is then treated with one or more applications of varnish of the same character applied by hand bymenns of a cloth-sponge, or the like, to forma coat 2 which completely closes any remaining pores, openings or'intersticcs in the cloth formin the balloon.

This coat oi varnish thus app ied covers the a tacky state it is treated by a silverizing rocess. The silverizing process consists 1n placing upon application of varnilh has become thoroughly dried and while the; varnish is yet in a tacky condition, a coat 3 of silverizing substance in order to provide a perfectly smooth and finished surface'and completely to the surface of the t the balloon, before the last fill and close any remainin pores'and' perforations and render the ba loon completel The silverizing process which composition produced by the admixture of aluminum dust or powder and powdered French chalk, or their equiva lents, in the proportions approximately ofone pound of aluminum dustor powder to each two pounds of powdered French chalk.

These substances are thoroughly mixed together and are applied to the tacky surface of the balloon in a powdered form, thereby producing a perfectly smooth and finished surface rendering the balloon surface ornamental and easy to handle, and eliminating all condition of tackiness.

This treatment also darkens the fabric and prevents or eliminates excessive or rapid contraction and expansion of the gases in the balloon when passing from a cloud into the clear sky and the full heat of the sun intermittently.

In practice, I prefer to complete the upper and lower halves of the balloon envelop separately, each being constructed on the French block system and each half of the envelop belng finished with the final silvcrizing coat ing before the two halves of the balloon are sewed together to complete the balloon. This system of manufacture is much more convenient and the two halves of the balloon may be handled independently more readily and with less trouble than is possible when the entire envelop is completed before the final silvcrizing coating is applied.

It will be understood-that the order of procedure may be varied in unessential particulars and that equivalent ingredients may be used in the place of the ones mentioned without departure from the principles of the invention. '1 do not restrict myself to precise proportions or ingredients or to other unessential limitations, but contemplate such variations as are within the principles of the invention as set forth in the appended claims.

What I claim and desire to secure by Letters Patent is 1. The process of making balloons, which consists in submerging the cloth in a sizing varnish, removing the excess varnish from the cloth, drying the cloth; preventing stretching of any portion beyond other portions thereof while the cloth is being dried; sewing the cloth to form the balloon applying a coating of varnish to the surface of the balloon; and then when the cloth is yet in a tacky condition applying thereto a powdered silvcrizing coating which forms a smooth or sleek surface. I

2. The process of making balloons, consisting in sizing the balloon cloth with a mixture composed of linseed oil, litharge and ocher; drying the cloth; sewing the cloth to form the balloon; applying a coating of varnish to the surface of the balloon; and then applying to the surface of the balloon while in a tackycondition a powdered mixture consisting of aluminum dust and powdered French chalk.

3. The process 'of making balloons, con sisting in sizing the balloon cloth in a boiled mixture composed of linseed oil, litharge' and ocher in the approximate proportions of one-half pound litharge and one-half pound ocher to each gallon of oil; drying the cloth; sewing the cloth to. form the balloon; applying a coating of varnish to the surface of the balloon; and then applying to the surface of the balloon while the surface is in a tack condition a powdered mixture including a uminum dust and powdered French chalk which mixture forms a smooth surface upon the balloon.

4:. The process of making balloons, consisting in sizing the balloon cloth' with a substance to close the pores and interstices in the cloth; drying the cloth; sewing the cloth to form the balloon; producing a tacky surface on the balloon by a coat of varnish; and applying to the tacky surface of the balloon a mixture which adheres to the tacky surface and forms 'a smooth surface.

5. In the manufacture of balloons, the process of making the balloon which consists in sizing the balloon cloth in a boiled mix ture comprising linseed oil, litharge and ocher in the approximate proportions of one-half pound lithar e and one-half pound ocher to each gallon of oil; passing the cloth between rollers to remove the excess of the mixture from the cloth and leave the cloth sized with the mixture; drying the cloth;

sewing the sized cloth to form the balloon, and applying a coat of varnish to the surface of the balloon.

6. In the manufacture of balloons, the process of making the balloon which consists in sizing the balloon cloth in a boiled mixture comprising-linseed oil, litharge and ocher in the approximate proportions of one half pound litharge and one-half pound ocher in each gallon of oil; passing the cloth between rollers to remove the excess of the mixture from the cloth and leave the cloth sized with the mixture; drying the cloth; sewing the sized cloth to form the balloon: producing a tacky surface on the balloon by applying a coat of varnish; and applying to the tackv surface of the cloth a silvcrizing mixture which adheres to the sized cloth and forms a smooth surface. I

7. In the manufacture of balloons, the process of making the balloon which consists in sizing the balloon cloth in a boiled mixture comprising linseed oil, litharge and ocher in the approximate proportions of onehalf pound litharge and one-half pound ocher to each gallon of oil; passing the cloth between rollers to remove the excess of the mixture from the cloth and leave the cloth sized with the mixture; drying the cloth; sewing the clothto form the balloon; producing a tacky surface on the balloon by applying a coat of varnish; and applying to the tacky surface of the cloth a silvcrizing mixture'including aluminum dust and powdered French chalk. L

8. In the manufac ure of balloons, the

pz 'ocess of making the balloon which con: siets in sizing the balloon cloth in a boiled 1 mixture comprising linseed oil, litharge and ocher in the a proximate'proportions of one-half pound ithar? and one-half pound ocher to each gallon o i between rollers to remove theexoess of the- ,mixture from thecloth and leave the cloth oil pessing the cloth sized. with the mixture; drying the cloth;

Sewing the cloth to form the balloon; producing a tacky surface on the balloonby a" HARRY E. HONEYWELL. 

